Board



(NoModeL) 2 Sheets-Sheet '1.

G.-E.H A YNES.

MACHINE FOR MAKING PAPER LEATHER BOARD. No 377,071. Patented Jan. 31, 1888.

WI T E5555. I -TEI (1 2, fdfl g M a, H R

(No Model.) 2 SheetsSheet 2..

U. E. HAYNES.

MACHINE FOR MAKING BAPBR LEATHER BOARD; No. 377,071. Patented Jan. 31, 1888.

[MEI

0w WM.

N. PETERS, Phoio-Lilhugmphef, Wnhmgmn. D. c.

ihvirnn Sra rns PATENT OFFICE.

CORNELIUS HAYNES, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO AMOS L. WOOD, TRUSTEE, OF SAME PLACE.

MACHINE. FOR MAKING PAPER LEATHER-BOARD.

SPECIFICATION forming part of Letters Patent No. 377,071, dated January 31,1888.

Application filed April 13, I857.

To all whom, it may concern;

Be it known that I, CORNELIUS E. HAYNES, of Boston, in the county of Suffolk and State of Massachusetts, have invented a new and use- 5 ful Improvement in Machines for Making Paper Leather-Board, &c., of which the following, taken in connection with the accompanying drawings, is a specification.

The object of my invention is to so construct a machine, or rather a series of mechanical de vices, that during the latter part of the process of preparing paper-pulp a compound may be introduced that shall render the product leather-board, &c.-oil as well as water proof. I attain this object by the mechanism shown in the accompanying drawings, in which Figure 1 is a view showing my invention partly in elevation and partly in section. Fig. 2 is a plan of the same as it appears upon the second floor. Fig. 3 is a plan of that part of my device that is usually made on the first door.

In the drawings, A A represent the rag or beating engines, and are made in the usual manner, there being no difference in their con- 5 struction or mode of operation to distinguish them from those in ordinary use.

Connected to the beating-engine A by a pipe, D, I have a compounding-tank, B. This tank is provided with steam-heating pipe-coil B, Fig. 2, which is supplied with steam by the pipe 13*, and has an exhaust-pipe, B The tank B has also arevolving stirrer, O,which is driven by bevel-gears O O, shaft and belt-wheel l. After the pulp is thoroughly beaten or ground in the engine A, the water is drawn off through the pipe A and its place supplied by my compound fluid from the tank B through the pipe D, where the continued operation of the engine will thoroughly miX the pulp with o my compound, which will give to the pulp thus prepared such properties that when said pulp is formed into board or sheets (as will be explained hereinafter) it will, under the internal chemical reactions taking place during the process of pressing, drying, and heating, render the product oil and water proof.

I will now proceed to describe the parts connected with the making and finishing the board orpaper. Theprepared pulp is drawn through the pipe E to the reservoir-tank F, where itis Serial No. 231,606. (No model.)

kept in constant agitation by stirrers of ordinary construction driven by the gears F F". From the reservoir F the prepared pulp is drawn up through the pipe H,l)y means of the pump H H and thrown into the apron-tank J. \Vithin the apron tank J, I place the open wirework drum J, aboutwhich the wire apron J revolves. This apron is supported at its highest point by roller J J*, and finally, after descending, passes under the collecting-cylinder K around the roller J Immediately below the roller J I place a drip-basin, K, which connects by a pipe, K, to the tank M, and above the roller J and collecting-cylinder K, I place a strainer, L. This strainer L is made to vibrate by the following device: L is a spring which draws the strainer in the direction of the arrow, and L is a lever connected by the arm L to the strainer, as shown, its upper end being pivoted at L to some fixed support, and is made to vibrate by the revolution of a wiper-cam, L This shaking device is attached to the rear end of the strainer L, as shown in Fig. 3, the front end being held in place by a vertical pivot, L.

The device above described-namely, the strainersis used in connection with the pipe L, Fig. l, to supply the paper-board during the last stages of forming it with an extra quantity (in case it is required) of the compound from the tank B.

For the purpose of returning the compound in the tank M to the tank B, I use apump, M, and pipe M F", Fig. 1, is an overflow-pipe connecting the apron-tank J with the tank F, and M? is a pipe used for drawing off any fluid that may remain in the tank J and conducting it to the tank M. After the pulp passing over the apron J has accumulated sufficiently thick on the collectingeylinder K, the machine is stopped and the sheet is cut and removed from the collecting-cylinder K and placed upon one of the shelves N of the car It, Figs. 1 and 3, previous to its being placed in the oven N for drying.

The even N, Figs. 1 and 3, is formed of metal, and is nearly air-tight, being provided with a door, N, sufficiently large to admit of the entrance of the car It. This car It runs upon tracks RR, and is provided with aseries roe of perforated shelves, N N, these shelves being about the size or a little larger than the sheet of board of paper to be dried upon them.

The oven N may be heated by furnaces or by steam-pipes S S and coils S. To facilitate drying, cold dry air is admitted at the bottom at I, Figs. 1 and 2, and after becoming hot and absorbing the moisture of the boards is drawn out by means of a fan-blower, P. The sheets are finally finished by passing them through calender-rolls, or by any of the usual hardening and smoothing devices. I

I claim-- 1. In a machine for making paper leatherboard, 850., the compounding-tank B, having 

